20R-1636: Caterpillar Reman Injector Hydraulic Pump 20R-1636 | HEUI Actuating Pump for CAT C9 – Fits D6R D7R 637G

20R-1636: Caterpillar Reman Injector Hydraulic Pump 20R-1636 | HEUI Actuating Pump for CAT C9 – Fits D6R D7R 637G

This Cat Reman injector hydraulic pump (HEUI actuating pump) is a high-quality replacement for Caterpillar C9 HEUI fuel injection systems. It replaces OE part number 20R-1636, cross-referenced to 384-0678, 476-8769 and 10R-8900. The pump builds and maintains the high oil pressure required to actuate HEUI unit injectors, delivering precise injection timing and metering for reliable starting, stable idle and full rated power. Hardened pumping gears and precision-machined housing stand up to sustained high-pressure operation, with OEM-spec mounting and sealing surfaces for a leak-free, bolt-on fit. Every unit is bench-tested for pressure and flow before shipment. Fits Caterpillar track-type tractors (D6R, D7R), wheel tractor-scrapers (637E, 637G), hydraulic excavators (E330D, E336D), the 586C scraper, compactors (814F, 815F, 816F) and generator sets (D250GC, D300GC). Export-packed, 12-month warranty and responsive technical support. Aftermarket replacement part — not a genuine Caterpillar product. "Caterpillar" and "CAT" are trademarks of their respective owners, used for reference only.

We are a professional manufacturing factory dedicated to diesel engine spare parts. Our core product line covers diesel fuel injectors, injector nozzles, fuel injection pumps and complete injector repair kits. Backed by steady in-house stock, rigorous quality inspection and direct factory pricing, we partner with global wholesalers, maintenance workshops and machinery enterprises. We deliver premium reliable spare parts, fast lead time and all-round one-stop export service. We warmly welcome your inquiries and long-term business cooperation.